Dispensing system for lubricants and the like



Nov. 24, 1936. A. E. DIENY DISPENSING SYSTEM FOR LUBRICANTS AND THE LIKE 2 Sheets-Sheet l Filed sept. 8, 1934K QQQC ,Q fu@ i, z

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Yr ec mi? ll Nov. 24, 1936. A, E, DlENY 2,062,213

DISPENSING SYSTEM FOR LUBRICANTS AND THE LIKE Filed Sept. 8, 1934 2 Sheets-Sheet 2 Patented Nov. 24, 1936 UNlTED STATES ,earns DISPENSING SYSTEM FR LUBRCANTS AND THE LIKE Alfred Emile Dieny, Viroay, France 4 Claims.

Ihe present invention relates to devices for measuredly chspensing or distributing liquids, such as lubricants, handled with pumps, and consists in a device for dispensing or distributing l such liquids, which operates directly, which is controlled by the distributed liquid itself, and which may be a single unit or a plurality of units. It is particularly suited to an intermittent pressure system.

My invention provi es, for example in a lubricating plant having a plurality of points n in number to be lubricated, a source of uid under pressure discharging through a main supply pipe, a dispensing device receiving liquid from this main supply pipe, and distributing outlets radiating from the dispensing device and leading to each point to be lubricated, each distributing outlet being controlled by a dispenser for delivering a single charge or shot, or there being employed a common dispenser delivering a number of different charges which can be individually adjusted.

By a suitable device, as in an intermittent pressure system, pressure is maintained inside the main supply pipe during a determined time, and this pressure is followed by a period of decrease in pressure, which together provide for the operation of. the dispensers.

The apparatus dispensing the single charge comprises two pistons, an admission piston, and a driving or distributing piston. Both of these pistons are suitably controlled by springs and are actuated to move only by the action of the fluid pressure existing in the main supply pipe.

Two pressure chambers are provided in the apparatus, communicating with each other by an outer by-pass passage through which there flows, when the pressure diminishes in the main supply pipe, a unit charge or shot, ory unit quantity or" the fluid, which is the output per cycle, and iiows into the outlet chamber, this charge being discharged by the dispensing device when the pistons move in the reverse direction, the apparatus working in this manner according to a twostroke cycle, an admission stroke and a pressure stroke.

The output per cycle of the dispensing device is a function oi the length of the stroke of each distributing o-r pressure piston; by adjusting this stroke this output can be modied.

The dispensing device with multiple outlets is based on the same operating principle, but although it comprises a single admission piston, there are as many distributing or driving pistons as there are points to be supplied with lubricant,

these distributing pistons being disposed around the admission piston, as radially, and the length of the stroke of each distributing piston being adjustable.

In every case the pressure of the liquid in any ci the side passages is equal to that existing in the main supply pipe, and the discharge occurs at the moment of. applying pressure in the main supply pipe.

IThe invention will be understood from the following description and by reference to the annexed drawings which show particular embodiments of my invention, and wherein:

Fig. l shows in vertical section a dispenser delivering a singlev charge.

Figs. 2 to 4 show several different operating positions of the dispenser of Fig. l.

Fig. 5 shows in plan view a multiple dispenser delivering a number oi charges.

Fig. 6 shows partly in vertical section the multiple dispenser of Fig. 5, taken on the line 6 6 of Fig. 5.

Figs. '7 to l0 show successive positions in operation oi the diiierent pistons of the multiple dispenser of Fig. 5, taken horizontally across Fig. 5.

Each dispensing device with single outlet, as shown in Fig. l, comprises a sleeve member h provided in its center with a pin b forming an abutment or bearing, and which separates the two partial pressure chambers a and a. In the chamber a moves an admission piston c, and in th-e chamber a' moves a pressure or distributing piston c. The stroke L of the admission piston c is automatically limited by the liquid itself as explained below, whereas the stroke L of the pressure piston c is limited by an abutment or bearing d ci variable length and position, which can be adjusted if necessary during operation by unscrewing coupling ,or by adjusting the position of abutment d on coupling i. This regulation can also be obtained by varying the length of the piston c without altering the length of the corresponding abutment or bearing d.

This abutment d is mounted in a central channel w in a coupling member i which is adjustably screwed into the terminal shoulder u of sleeve member h. The pistons c` and c are .actuated respectively by a spring r mounted between piston c and pin b, and by a spring r above piston c which fits in a central channel w of coupling member i.

A small passage e establishes the communication between the chamber a and a central conduit or main supply pipe g.

' and deliver to distributing pipesconnected to Y Finally the two chambers a and a can com- Vber h, and at one end ts against terminal shoulder u of sleeve member h, and at the other end fits against a threaded coupling member e which is screwed onto sleeve member h.

The operation ci the device, which will be clearly understood, is as follows:

When the members occupy the normal rest position shown in Fig. 2, corresponding to substantially no pressure in the main supply pipe, if the pressure increases in the main supply pipe g, the admission piston c moves, closes the port t ofthe by-pass f, and uncovers the port e of the admission passage e.

Then, at the moment when the pressure in the chamber a has become equal to that in the main supply pipe g, there is .an equilibrium of pressures soV that the admission piston c stops, whereas the driving or distributing piston c forced by the liquid moves until it meets the abutment or bearing d (Fig. 3), at which moment all discharge ceases.

Y If the pressure drops in the main supply pipe, as in the operation of an intermittent pressure system, or for other reason, the pistons c and c are restored to their initial positions by their springs r and r. When the admission piston c is at the end of its downward stroke so that the port e is closed and the port t is uncovered, the

' volume of the liquid below the piston c is forced through the by-pass t-f into the upper chamber a (Fig. 4). Y

Consequently a iixed quantity or unit of quan- Y tity Vof liquid, the output per cycle, will be disdharged by the pressure or driving piston c when the pressure is again applied in the main supply pipe, so that the above described process is repeated.

In a dispenser for delivering a plurality of different charges to different points ,as shown in Fig. 5, the operating principle is the same, there being only a single admission piston with its casing or cylinder, but there being as many pressure or distributing pistons and their cylinders as there are distributing pipes or lines. Y

The pressure or driving or distributing pistons can be arranged either parallel to each other, or, preferably, radially about the admission cylinder, as shown in Fig. 5.

According to the arrangement of Fig. 5, around a central casingV or cylinder N of the pump which controls admission,V and through which casing or cylinder N the liquid is admitted, there `are disposed the distributing casings or cylinders Si, Sz; S3, S4, S5, and'Se, which respectively correspond these distributing cylinders, which distributing pipes here shown as six in number, lead to the points to be lubricated. Instead of there being six distributing pipes, there may of course be any suitable number required.

'Ihe multiple distributing device is composed of a star-shaped assembly and has the central hub portion N provided with the central cylindrical bore a, and has radiating therefrom the distributing cylinders provided with central cylindrical bores ai, a2, etc., and with intercommunicating passages f1, f2, etc., in number equal to that of the distributing outlets and communi- '1scating with these distributing outlets m1, m2, etc.

Referring to Fig. 7, all these cylindrical bores and passages a, a1, a2', as, a4, etc., and f1, f2, f3, f4, etc., form together, When the system is in normal position at rest with no pressure applied in the central supply pipe, a common chamber A (Fig. '7) comprising the. various intercommunicating spaces and in which cylinders therein included there move the admission piston c and the distributing pistons c1, c2. The admission piston c which slides in the cylinder N is subjected to the action of a. restoring spring r, and the distributing pistons c1, c2, c3, c4, etc., which move in cylinders S1, S2, S3, S4, etc., are subjected to the action of restoring springs r1, r2, ra, r4, etc.

Consider the moment when the members occupy the normal rest position corresponding to no pressure applied in t'he main supply pipe, as

shown in Fig. '7. It will be seen that at the moment when pressure is applied in the main supply pipe g, the admission piston c will move into the position shown in Fig. 8, closing the ports t1, and t4 and opening the ports e1, and e4. At this moment the common chamber A becomes divided into two separate spaces A1, A4, and the distributing pistons c1 and c4 move, under the action of the pressure existing in supply pipe g, until they are stopped by a stopping device which can be for example the helical springs r1, r4, and at this moment all piston movement ceases, as shown in Fig. 9.

When the pressure falls in the main supply closed up to the moment when it has returned to its initial position, as shown in Fig. l0. It is only at this moment when admission piston c has returned to its initial position, that all the ports e1, e4, etc.,'and t1, t4, etc. being in communication with each other, the common chamber A is again formed with its intercommunicating spaces, and chamber A is again separated from the main supply pipe g by the, admission piston c, when admission piston c has returned toV its initial position.

At this moment, as shown in Fig. 10, each of the `distributing pistons c1, c4, etc. while returning to its inital position, causes the initial measured charge or shot to automatically pass from its back face to its front face through the ports t1, t4, etc., and this proceeds without any variation of the pressure in any part of the common chamber A, as shown in Fig. 10.

This unit charge or shot will be dischargedk adjustable of each other ,as to Volume by variation of the length of-the piston stroke, as for instance by coupling members i1, i4, or by variation of the respective lengths of these pistons.

In order that the delivery of lubricant mayl follow as quickly as possible the instant of applying pressure in the main supply pipe g, without substantial delay, there is provided a return or check valve on each distributing outlet m1, 'm4,-

etc. as by a flap valve not set tight, a calibrated orifice, a ball valve as shown in Fig. 6,.or other- Wise, but the system will operate without such 'check valve, although delivery will not be as quickly commenced.

It will be understood that the number of distributing outlets can be any number desired, and the principle of the invention can be appli-ed in its entirety to the arrangement of a measuring dispenser with only one distributing outlet, whose section will be the same as that of Fig. 6, with any appropriate arrangement of the pistons c, and c1, c4, with relation to each other, such as coaxially -for example.

In every case the pressure of discharge into the side passages is equal to that existing in the main supply pipe, and the discharge starts at the moment when the pressure is applied in the main supply pipe.

Manifestly, the construction which I have described is capable of considerable modification which will be obvious to those skilled in the art, and such modifications are included within the spirit of my invention. In particular, the relative arrangements of the ports of the passages leading from the admission cylinder, may be altered without changing the general principles of operation of my apparatus.

What I claim is:

1. In a iiuid dispensing device, a cylindrical chamber, an admission piston and a driving piston mounted coaxially in said chamber in spaced relation, a fixed radial pin mounted transversely of said chamber between said pistons, a iirst spring mounted between said pin and admission piston, an abutment member mounted in the end of said chamber opposite said admission piston and beyond said driving piston, and a second spring mounted between said driving piston and said abutment member, said cylindrical chamber being provided in the Wall thereof with an admission by-pass having one port in the wall of said chamber between said pin and the position of the face of said admission piston nearest said pin which is assumed when said admission piston approaches said pin most closely, and having a second port in the wall of said chamber adjacent said admission piston and so positioned that said admission piston in its position most distant from said pin closes said second port, but said admission piston when forced toward said pin clears said second port and has its face remote from said pin between said pin and said second port, said chamber further being provided in its wall with a delivery by-pass having a iirst orifice adjacent said admission piston so positioned that said admission piston when forced toward said pin closes said rst orifice but said admission piston in its position most remote from said pin clears said rst orifice with its face nearest said pin on the side of said rst orice remote from said pin, said delivery by-pass having a second oriiice in the wall of said chamber adjacent said driving piston so positioned that said driving piston in its position most remote from said pin closes said second orifice but clears said second orifice when in positions adjacent said pin.

2. In a multiple-outlet dispensing system, an admission cylinder provided with an inlet at one end thereof and closed at the other end thereof, an admission piston slidable therein, a plurality of distributing cylinders radially mounted on said admission cylinder as a hub, the cylindrical wall of said admission cylinder being provided with a plurality of axially symmetrically disposed portals respectively connecting with the hub ends of the interior of each of said distributing cylinders, and being further provided with a plurality of axially symmetrically disposed by-pass channels respectively connecting with the end remote from the hub of the interior of each of said distributing cylinders, resilient means for normally keeping said admission piston entirely on the side of said portals and by-pass channels in said admission cylinder nearest the inlet of said admission cylinder when no pressure is applied to the inlet thereof, a plurality of distributing pistons respectively slidable in said distributing cylinders, resilient means in each of said distributing cylinders for respectively normally maintaining each of said distributing pistons near the hub end of its distributing cylinder, said portals being spaced from said by-pass channels longitudinally of the wall of said admission cylinder and on the side of said by-pass channels nearest the inlet of said admission cylinder, said portals and by-pass channels being so positioned that when said admission piston is forced into its position most remote from the inlet end of said admission cylinder it closes said by-pass channels and opens said portals on the inlet side of said admission piston to communication with said inlet.

3. In a multiple-outlet fluid dispensing device, la cylindrical admission chamber, means for feeding fluid intermittently under pressure into an inlet end of said admission chamber, an admission piston slidable in said admission chamber, a rst spring mounted between said admission piston and the end of said admission chamber remote from said feeding means, a plurality of distributing cylindrical chambers mounted on said admission chamber, each of said distributing cylinders being provided with a distributing piston slidable therein, individual main portals respectively connecting one end of each distributing chamber to said admission chamber at axially similarly positioned points in the cylindrical wall thereof, each of said distributing chambers being provided with a delivery outlet at its end remote from said first mentioned end communicating with said admission chamber through said main portal, by-pass channels respectively connecting the delivery end of each of said distributing chambers to said admission chamber at axially similarly positioned points in the wall thereof, a plurality of springs respectively mounted in said distributing cylindrical chambers between their delivery ends and the distributing pistons therein, said main portals and said by-pass channels being so positioned in the wall of said admission chamber that said admission piston in its position nearest the inlet end of said admission chamber clears both said main portals and said by-pass channels with its face remote from said inlet on the inlet side of both said main portals and said by-pass channels thereby establishing common communication between said admission chamber and both ends of said distributing chamber, said main portals and said by-pass channels further being spaced axially and so positioned that said admission piston when forced into its position remote from the inlet end of said admission chamber closes said by-pass channels, but opens said main portals to said admission chamber on the side of said admission piston nearest to said inlet end of said admission chamber, whereby successive intermittent applications of pressure to iiuid in the inlet end of said admission chamber cause the successive delivery of measured charges of said liquid from each of said distributing chambers.

4. In a fluid dispensing device, an admission cylinder having inlet and outlet ends, a distributing cylinder having inlet and outlet ends, an admission piston displaceable in said admission cylinder, an independent distributing piston displaceable in said distributing cylinder, individual resilient means for normally maintaining each of said pistons in its position most remote from the outlet end of its respective cylinder, said admission cylinder being provided in the wall thereof with a rst port so positioned that said admission piston in its position most remote from the outlet end of said admission cylinder isolates said first port from said inlet end of said admission cylinder but said admission piston in its position nearest said outlet end of said admission cylinder places said rst port in communication with the inlet end of said admission cylinder, a channel establishing communication between the inlet end of said distributing cylinder and said rst port, said admission cylinder being :further provided in the wall thereof with a second port so positioned that in its position closest to the outlet end of said admission cylinder said admission piston closes said second port but in its position most remote from the outlet end of said admission cylinder said admission piston clears said second port and places said second port in communication with said intercommunicating channel, and a by-pass channel connecting said second port with the outlet end of said distributing cylinder.

ALFRED EMILE DIENY. 

